Recording pressure-gage



(No Model.) 3 Shets-Sheet 1. F. A. JONES.

v RECORDING PRESSURE GAGE.

No. 345,061. Patented July 6, 1886.

WITNEEIEEE (No Model.) V 3 Sheets-Sheet 2. F. A. JONES.

RECORDING PRESSURE GAGE.

Patented July 6, 1886.

3 Sheets-Sheet 3.

F. A. JONES.

RECORDING PRESSURE GAGE.

(No Model.)

No. 345,061. Patented July 6, 1886.

-nmt

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WITNEEEEE.

UNITED STATES PATENT OFFICE FLORENTINE A. JONES, OF MALDEN, MASSACHUSETTS.

RECORDING PRESSURE-GAGE.

SPECIFICATION forming part of Letters Patent No. 345,061, dated July 6. 1886- Serial No. 122,741. (No model.)

To aZZ whom it may concern.-

Be it known that I, FLORENTINE A. J ONES, of Maiden, in the county of Middlesex and State of Massachusetts, have invented new and useful Ill'lPlOVOIDGlltS in Recording PressiireG-ages, of which the following is a specification.

This invention relates to gages for recording the extent and variations of pressure in steanrboilers, cylinders, and other vessels containing air, gas, liquid, or other fluids.

The object of the invention is to record the pressure and its variations upon a suitable recording-snrfiiee by means of a connecting or reciprocating red and a recording device which may be operated independently of the gage-movement commonly used in Bourdon spring-gages.

In the accompanyii'ig drawings, in which similar letters of reference indicate like parts, Figure I is a plan view of a recording pressure-gage embodying my invention, with the steam-pressure dial removed, a single tubular or lourdon spring being employed. Fig. 2 is a similar view showing the device in con nection with a double tubular or Bourdon spring. Fig. 3 is a similar view showing a modification, a single tubular or llourdon spring being employed.

A and A are boxes secured to each other by the connection 13, which has a suitable passage, B, for the accommodation of the connecting mechanism.

U represents a tubular or Bonrdon spring, single in Fig. 1 and double in Fig. 2; and 1), the ordinary inechanisn'i of a steamgage, coir sisting,essentially,of a segmental rack, d, pivoted near its rear end, and meshing into a pinion carrying the pointer Ii. The pinion is not shown in the drawings.

1) is a link which, when a single spring is used, connects the mechanism 1) therewith, and when a double spring is used, in Fig. 2, connects said mechanism with the bifurcated projection c,seeurcd to the ends of said spring, whereby movement is imparted tothe pointer- K, thus showing in connection with the dial the steam-pressure.

In Fig. I, E is a mnltiplyinglever, pivoted at c to the box A, and having its short arm loosely connected by a link, H, with the end of the Bourdon spring 0. Its long or multiplying arm is adj ustably connected with the longitudinally-rcciprocating rod I, extending to the recording-dial I, and operating a delineating device, J, whereby the extent and variations of pressure are recorded on said dial I, rotated by clock-work in the ordinary manner. Guides I) are placed as shown to prevent lateral movement of the connecting red I.

In Fig. 2 the multiplying-lever E is pivoted at c, and has its short arm connected by a link, H, to the bifurcated rod a, and its long arm adjustably connected, as in Fig. 1, with the reciprocating connectingrod I.

In the modification shown in Fig. 3 the multiplying-lever E is rigidly secured to the end of the rack d, and is loosely connected by a link, L, with the lever B, one end of which is pivoted to a rod, S, (whose other end is pivotally secured to the box A,) and the other end is pivoted to the reciprocating connectingrod I, which in this case requires, in addition to the rollers 7), another set ofguiding-rollersf.

In all the figures of the drawings it will be observed that I show a longitudinally-reeiproeating connecting-rod for operating the record ing device, actuated by a multiplying-lever which is connected directly or indirectly with the steam-pressure mechanism or the tubular or Bourdon spring, but is additional to both.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

In a recording pressuregage operated by a Bourdon spring or springs, the combination of the following elements, viz a tubular Bourdon spring or springs and suitable connecting mechanism, a multiplying-lever additional to or independent of the gage mechanism, a reciprocating rod suitably connected with said multiplying-lever, a recording device operated by said rod, and a suitable surface for receiving the record and extent of the variations of pressure, substantially as and for the purpose set forth.

FLORENTINE A. JONES.

lVitnesses:

' HENRY W. WILLIAMs,

JOSEPH lsrrisituen. 

